Dumping-car.



N0- 829,667. l PATENTED AUG. 28, 1906.

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' FRANoVIs PETELEE, oF

MINNEAPOLIS, MiNNEsorii.l f

DuMPlNG-CAR.

Specication of Letters Patent.

Patented Aug. 28, 1906.

Application flied October 6.1905. Serial No. 281.566.

To a/ZZ whom it may concern.-

Be it known that I, FRANCIS PETELER, of'

Minneapolis, Hennepin county, Minnesota,

have invented certain new and luseful Im provements in Dumping-Cars, of which the ollowing is a specification.

My invention relates to portable dumpingcars, and is designed as an improvement over the oar shown and described in Letters Patent of the United Statesissued to me May 19, 1874, No. 151,156.

The primary ,object of my invention is to.

provide a pivot-bearing for the car-body on the truck frame which will permit easier dumpin of the car and will allow it to automatioal y return toits normal horizontal position after dum ing, thereby economizing in both time and la or. v

A further object is to provide a bearing whichwill allow the car-bod tobe tilted to a greater angle in dumping than is ordinarily V Obtained in dumping-cars of this type, thus insurin the loa The invention consists generally in providmg a bearing wherein the pivotal point on which the car swings in dumping is temporarily changed from the center of the car to a point at one side thereof or eccentric thereto during the latter part of the travel of the car-l body to its tilted position,v whereby the weight of the upper s1de of the car-body and the door in some sizes of cars can be utillzed to return it to its normal horizontal position.

Further, the invention consists in raising the pivotal point of the bearing to a position nearer the level of the load, to the end that the initial tilting movement of the car-body will be made easier. y

Further, the invention consists in roviding a bearing which will allow the carody to be tilted to an angle of forty-five degrees or more, thereby insuring the quick and oomplete discharge of its load.

Further, the invention consists in various constructions and combinations, all as hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a longitudinal vertical section oi a portable dumping-car with my invention applied thereto. Fig. 2 is a transverse vertical sectional view of the same, showing the car-body inits normal horizontal osition. Fig. 3 is asimilar view showing t e car-body in its tilted or the rapid and complete dis arge of -ing forming the other tail sectional views of the bearing or car-body dumping position. Figs. 4, 5, and 6 are de-v 4 on the truck-frame, illustrating the normal position and the partial and complete tilting positions assumed by the movable portion ofy the bearing -during the act of dumping the car. iigl. 7 is a plan viewof the plate or castingwhic car-body, and Fig. 8 is a plan view of the cast portion of the bearing and mounted upon the truck-frame.

i. In the drawings, 2 represents a truckframe of the construction usually employed by me Vprovided with a timber 4 extending longitudinally along they middle line of the frame. Upon this timber the upright castings or standards 5 are mounted, there being one in the middle and one at each end ofthe car. In larger cars this number may be increased. These standards, as wellas the otherportion or section of the bearing carried by the car-body, are duplicates of one another, and consequently a descri tion of one will suflice for all. The parts of t e bearings are reversed in position from that shown in my 1874 patent, though a similar principle is employed.

Upon the upper end of the standard and centrally arranged with' respect thereto is a is secured tothe under side ofthe pivot 6, adapted to enter a socket 7, provided in a plate 8, which is secured to the under side of the car-body 9 and extends transversely thereof, as shown in Figs. 2 and 3. These parts whenv ittedtogether form a rocker-bearing, which supports the oar-body in its horizontal position and during its initial tilting movement and allows it to be tilted to either side and discharge itsA con" tents, the weight of the car-body holding the parts of the bearing together. It has been found, however, that where the bearing or pivotal point of the car` body is arranged centrally with respect thereto considerable effort' is required to lift the car preparatory to dumping and to swing it back to its horizontal position after dumping, and in very large cars as many as five or six men may be required to dumpthe car and return it empty to lts normal horizontal position. Considerable time, as well as labor, is thereby lost in the operation ofthe car. To obviate this objection and provide for quick dumping and the automatic return of the car-body to its normal horizontal position, provide sockets 9 in the upper end of the standard 5, upon each side .of the center thereof, coperating IOO IIO

with pivots I() on the plate S on each side of the socket T. These pivots 1(}-are normally l out ol' Contact with thel sockets 9 when the car is horizontal; but when tilted to aeertain pre' determined angle, preferably from twelve to iiftinn degrees, thepivot 100011 that side of l thecar over which the load is discharged will l enter its socket., while the central pivot 6 will temporarily pass out of engagement with its socket, transferring the pivotal or rocking bearing-point from the center of the truckframe and the car-body to a lower point and one that is eccentric with respect to the eenter line of the car, the difference of level of the pivots and the degree of eccentricity of the latter one being determined by proper calculation to obtain thedesired dumping angleand speed of movement. The momentum of the car-body and its load will cause a continued tilting of the car-body for a distance of about-twelve degrees after its pivot 10 enters the socket 9, when a pivot 12 on the extreme end of the standard 5 will enter a cupshaped socket 13 in the end of the plate 8 and furnish an additional or supplementary eccentric rocking bearing for the car-body to the end of itstilting movement or until it engages the stops 11, provided on the truckframe. At this point the car-body will have assumed an angle of forty-five degrees (the position shown 1n Fig. 6) or a greater one, if preferred, and the load will be quickly and completely discharged. During the latter part of the tilting movement the area of the eccentric bearing will be practically doubled to insure a substantial support for the carbody, and at the same time the double or reverse curve of the eccentric bearing will lock the parts together and positively prevent accidental separation of the carbody from the truck during thefoperation of dumping. As soon as the car is freed from its load the preponderance of weight on the upper side of its temporary' eccentric bearing will cause the car-body to tip back onto its center-bearing, and its momentum as it changes its pivotal point from the side to the center, aided by the door in certain sizes of cars, will cause it to swing on its center-bearing back to its normal horizontal position. In some types of car, where the car-body is relieved of the weight of the door on the side toward which the load is dumped, I am ableto-utilize such weight on'the opposite side to aid in'returning the car-body to its normal position. This-is illustrated in the drawings where the door 14, provided on each side ofthe car, is normally supported on thesides of the car, but is arranged to be temporarily supported upon hinged posts or standards 15 when the car is tilted, the invention forming the subject-matter of Patent No. 706,254, issued to me August 5, 1902. As fully set forth in this patent, when the car is tilted the door on that side toward which theload is discharged will be supported by the pivoted standards and the car relieved entirely of its weight, while the door on the opposite or upper side of the car will remain supported by the sides of the car and aid in returning it to its horizontal position. 'lo prevent the car from swinging beyond its horizontal position after dumping, I provide the hinged frames 16, which are fully shown and described in mv Patent No. 706,254, above referred to. By the use of this coinbined central and eccentric bearing the return of the car-body to its horizontal posi-l tion after dumping will be automatic. The

center-bearing is raised to a point directly beneath the level of the load, and the initial tilting movement of the car will be rendered correspondingly easier, and when it has tilted a predetermined distance the bearing will be automatically transferred from the center to a poin't at one side thereof, and the momentum of the car-body and its loadwill carry the tilting movement onward over this eccentric bearing until the body contacts with the fixed stop on the truck-frame beneath, When-this occurs the ear-body will have assumed the desired angle and its load will be instantly and completely discharged. During this time the car-body will be ventirely supported off its center, and at the beginning of its return movement t-o its horizontal position a large portion of the body, owing to its eccentrically-arranged support,

will be abovethe level ofits bearing and the v preponderance of weight will be sufficient to return the car-body to its horizontal position without'the aid of the operator. As soon as the center pivot enters its socket on the re, turn movement of the car-body, the pivotal point will be transferred back to the center again and the car-body will swing down throu h its own momentum and weight, aided y the door in some cars, to its normal position, when the loading and dumpingoperation can be repeated.

I claim as my invention- A 1. A dumping-car having central and ec-` centrically disposed pivot bearings located beneath the car-body and on which the body successively turns in dumping the load,.said bearingscomprising a member having een trally and eccentrically disposed pivots and another member having centrally and end disposed sockets formed with side Walls to receive the correspondingly-disposed pivots and provided with pivots located between the central and end disposed sockets to bear against the first-mentioned member .between its pivots, substantially as described.

2. A dumping-car having central and eccentric pivot-bearings, oemprising a fixed and a movable plate formed with correspond'- ing rocking pivots and sockets, the outer sockets on the movable plate having their outer end walls overhanging the pivots 'fit- I OO IIO

ting in said sockets so as to bear in locking engagement with the outer face of said pivots, substantially as described.

3. A dumping-car provided with central and eccentrically-arranged pivot-bearings on which the car-body successively turns in dumping the load, said bearings and body being so dis osed in relation to each other that when tle body is tilted the preponderance of weight thereof to one side of the bearing will cause the body to automatically return to its normal position after dumping.

4 1. A dumping-carhaving a central pivotbearing located beneath thelcar-body whereon the car-body is normally supported, and an eccentric pivot-bearing upon which the car-body is supported and turned during the' intermediate and latter part of its tilting movement, said central and eccentricallydisposed bearings being so located in relation to each other that the centrally-disposed bearing supports the body until the body bears u on the eccentrically-disposed bearing, an said eccentric bearing having a double or reverse curve to lock the body thereon, substantially as described.

5. A dumping-car provid ed with centrally andeccentrically arranged pivot-bearings on which the car-body successively turns in dumping the load, said'bearing being so disposed with relation to the body that when. the body is tilted the preponderance of Weight thereof to one side of the bearing will cause the body to automatically return to its normal position after'dumping, and said cen-` tral pivot-bearing being beneath and close to the bottom of the load whereby the initial tilting movement of the ear-body will be made easier, substantially as described..

6. .A dumping-car havin a central pivotbearing located beneath t e car-body and whereon the car-bodyis normallyupported in a lioriaontal position, an eccentricallv-arranged pivot-bearlng Whereon the car-body is automatically supported during the `intermediate and latter part ot' its tilting movement,y andsaid car-body having doors normally carried by said car-body, and means for temporarily supporting the door on the side toward which the car-body is tilted to discharge its load, and the preponderance of weight ofthe car-body on the other side aided by the door on that'side being above said eccentric pivot when the car-bodyis in its tilted position, whereby it will automatically return to its normal horizontal position when the dumping operation is completed, siibstantially as described. i

7. The combination. with a truck-frame, of standards centrally mounted thereon and provided with centrally-arranged pivots and with eccentricallyarranged sockets and pivots upon each side of said central pivot and below the level of the same, a car-body, plates secured transversely to the under side thereof and having centrally-arranged sockets to receive said central pivots and normally' supporting the car-body in a horizontal position, and said plates being also provided at each end with pivots and sockets to coperate with the sockets and pivots on said standardsv and whereon the ear-body is supported and turned during the intermediate and latter part of its tilting movement, and said central sockets passing out of contact with their pivots during the latter part of the tilting movement of said car-body, and said eccentric sockets and pivots having double 'or reverse curves whereby their bearing area will be increased and the parts will be locked together during the tilting movement, substantially as described. In witness whereof l have hereunto set my hand this 3d day of October, 1.905.

FRANCIS PETELER. Witnesses: RICHARD PAUL, C. MACNAMARA. 

